Introduction: There are limited longitudinal data on the systemic and mucosal antibody
responses to SARS-CoV-2 from Latin America, a region severely affected by COVID-19, and …

Objective To evaluate determinants of seroprevalence and changes in levels of anti-SARS-
CoV-2 antibodies longitudinally in adults with different levels of exposure to SARS-CoV-2 …

Background The COVID-19 pandemic that emerged in Wuhan, China at the end of 2019,
spread rapidly around the world with almost 600 million cases and 6.3 million deaths today …

Background Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) continues to
cause very high morbidity and mortality throughout Latin American countries. However, few …

Abstract Introduction/Aim Recent studies have shown that seroprevalence is quite variable
depending on the country, the population and the time of the pandemic in which the …

Background Little evidence exists about the prevalence of COVID-19 infection at high
altitude. We aimed to estimate the population-based seroprevalence of COVID-19 in Cusco …

Background Seroprevalence of anti-SARS-CoV-2 antibodies is now available in several
world regions to better estimate transmission dynamics. However, to date, there is no …

Background The COVID-19 pandemic that emerged in Wuhan, China at the end of 2019,
spread rapidly around the world with almost 600 million cases and 6.3 million deaths today …

Seroprevalence surveys provide estimates of the extent of SARS-CoV-2 infections in the
population, regardless of disease severity and test availability. In Mexico in 2020, COVID-19 …

Objective. To describe the humoral response in a cohort with mild and asymptomatic SARS-
CoV-2 infection previously identified in a community-based serological survey. Materials …